Uninstall your existing video card drivers (even if your just updating) and restart your comp.
Copy the driver file "wxp-w2k-catalyst-8-03-040610a-016126c.exe" to an easily located file on your OS drive. C:\Temp is a good one. Once you have done that go to your start menu and select "RUN."
When the run dialog box appears and it asks what program you want to execute, click "browse" and navigate to the folder where you saved the driver file (i.e. C:\Temp)
Select the driver file and click "open" then click "run" to execute i